K57
ICD-10Non-billable categoryDiverticular disease of intestine
Official ICD-10-CM descriptor (FY2026)
Diverticular disease of intestine
K57 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.
Excludes1
Not coded here. An Excludes1 code should never be reported at the same time as the code above it.
- congenital diverticulum of intestine (Q43.8)
- Meckel's diverticulum (Q43.0)
Excludes2
Not included here. The condition is not part of this code, but a patient may have both, and both codes may be reported together.
- diverticulum of appendix (K38.2)
Code also
Two codes may be needed; sequencing depends on the reason for the encounter.
- if applicable peritonitis K65.-
More specific codes under K57
- K57.0Diverticulitis of small intestine w perforation and abscesscategory
- K57.1Diverticular disease of sm int w/o perforation or abscesscategory
- K57.2Diverticulitis of large intestine w perforation and abscesscategory
- K57.3Diverticular disease of lg int w/o perforation or abscesscategory
- K57.4Dvtrcli of both small and lg int w perforation and abscesscategory
- K57.5Diverticular dis of both small and lg int w/o perf or abscscategory
- K57.8Dvtrcli of intestine, part unsp, w perforation and abscesscategory
- K57.9Diverticular disease of intest, part unsp, w/o perf or abscscategory
Where this code sits
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ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.